Improvement in heating-drums



M. w. LESTER.

Heating-Drums No. 129,147. -Y- Patentedluly16,1s7z.

UNITED STATES PATENT OFFICE.

MOSES W. LESTER, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN HEATING-DRUMS.

Speciiication forming part of Letters Patent No. 129,147, dated July 16, 1872.

clare that the following is a true and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which- Figure l is a vertical section of my drum at x w, Fig. 3. Fig. 2 is a vertical section at y y. Fig. 3 is a horizontal section at zz in Fig. 1; and Fig. 4. is an enlarged side elevation of a pair of Slat-cranks and their springs.

Like letters refer to like parts in each figure.

The nature of this invention relates to a radiator to be used in ccnnection with a furnace or heating-stove for utilizing its waste heat, and is employed in connection with said stove or furnace. The invention consists in the peculiar construction of a tubular radiator, and the arrangement therein of a stationary and a sectional diaphragm, the latter composed chiefly of movable slats for regulating the flow of the heated gases through the radiator, and whereby they may be reverted in their passage to any desired extent.

In the drawing, A represents the shell of my radiator, preferably of thin sheet-iron, and provided with rolled or cast heads. In the center of the bottom head is the inlet-pipe B, and

in the upper part of the shell, at the back side,

is the outlet-flue O. D l), &c., are air-fines extending through both heads, and through them the air rises freely to be warmed by the heat transmitted from the heated gases in the radiator. A hood-like diaphragm, E, rising from the bottom head, extends toward the top head, deflectin g the currents of gases entering at B toward the front half of the radiator and its air-fines, but does not separate the front half from the rear one, as it does not extend at the sides to the shell, but leaves a space, which allows any surplus smoke beyond the capacity of the space above the diaphragm to pass to go around it, and thus prevents the heater, to which it is attached, from throwing out smoke and gas into the apartment. Behind this diaphragm or deector E, and between it and the outlet-flue C, is aparallel and transverse partition, F, extending entirely across the radiator, between the rows of airtubes; at the top it is tight, or entirely closed, and intermediately it is made up of movable horizontal slats, F', pivoted by shafts in their ends to the walls of the radiator in the manner of a Venetian blind 5 their shafts at one end are bent to form cranks, a, by which they may be rotated, and may be held in any position by frictional contact of leaf-springs d pressing against them, which springs are secured at one end to a plate, c, riveted to the outside of the radiator, as seen in Figs. 2

and 4.

.By opening the upper slats nearly a direct draught through the radiator is had; by opening the slats lower down the draught is partially reverted 5 and by closing all the slats, except one ortwo, as seen in Fig. l, the drau ht is fully reverted, so that the waste heat of the furnace is utilized by transmission to the air surrounding the radiator and passing through its tubes.

The positions of the cranks indicate those of their slats, but any other equivalent means for rotating and vholding the slats may be employed. c

The draught of the furnace may, to a certain extent, be regulated by the slats, but can-V not be entirely shut off by accident or design.

What I claim as my invention, and desire to secure by Letters Patent, is-

The arrangement within the tubular radiator A of the inlet-pipe B, outlet-flue O, deflector E, partition F, slats F', cranks a, and springs b, or their equivalents, as shown and set forth, for the purpose specified.

MOSES W. LESTER.

Witnesses:

WM. H. LoTz, GEO. FERRIs. 

